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# GIGA-BYTE TECHNOLOGY CO., INC.
GA-586AS
Processor Pentium
Processor Speed 75/90/100MHz
Chip Set SIS
Max. Onboard DRAM 128MB
Cache 256/512/1024KB
BIOS Award
Dimensions 280mm x 220mm
I/O Options 32-bit PCI slots (4), green PC connector
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|--------------------+----------+-----------------+----------|
| Green PC connector | J1 | Speaker | J6 |
|--------------------+----------+-----------------+----------|
| Green PC LED | J2 | Power LED & | J7 |
| | | keylock | |
|--------------------+----------+-----------------+----------|
| Reset switch | J3 | Chassis fan | J8 |
| | | power | |
|--------------------+----------+-----------------+----------|
| Turbo switch | J4 | 32-bit PCI | PC1 - |
| | | slots | PC4 |
|--------------------+----------+-----------------+----------|
| Turbo LED | J5 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 2MB | (2) 256K x 36 | NONE |
|------------------+--------------------+--------------------|
| 2MB | (2) 256K x 36 | NONE |
|------------------+--------------------+--------------------|
| 4MB | (2) 512K x 36 | NONE |
|------------------+--------------------+--------------------|
| 4MB | (2) 256K x 36 | (2) 256K x 36 |
|------------------+--------------------+--------------------|
| 8MB | (2) 512K x 36 | (2) 512K x 36 |
|------------------+--------------------+--------------------|
| 8MB | (2) 1M x 36 | NONE |
|------------------+--------------------+--------------------|
| 8MB | (2) 512K x 36 | (2) 512K x 36 |
|------------------+--------------------+--------------------|
| 8MB | (2) 1M x 36 | NONE |
|------------------+--------------------+--------------------|
| 12MB | (2) 512K x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 16MB | (2) 2M x 36 | NONE |
|------------------+--------------------+--------------------|
| 16MB | (2) 1M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 20MB | (2) 512K x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 24MB | (2) 2M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 24MB | (2) 2M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 32MB | (2) 2M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 32MB | (2) 4M x 36 | NONE |
|------------------+--------------------+--------------------|
| 32MB | (2) 2M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 32MB | (2) 4M x 36 | NONE |
|------------------+--------------------+--------------------|
| 36MB | (2) 512K x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 40MB | (2) 1M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 48MB | (2) 2M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 64MB | (2) 8M x 36 | NONE |
|------------------+--------------------+--------------------|
| 64MB | (2) 4M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 80MB | (2) 2M x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 96MB | (2) 8M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 96MB | (2) 8M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 128MB | (2) 8M x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 128MB | (2) 8M x 36 | (2) 8M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP8 |
|----------------------------+-------------------------------|
| 2MB | pins 1 & 2, 3 & 4 closed |
|----------------------------+-------------------------------|
| 2MB | pins 1 & 3, 2 & 4 closed |
|----------------------------+-------------------------------|
| 4MB | pins 1 & 2, 3 & 4 closed |
|----------------------------+-------------------------------|
| 4MB | pins 1 & 3, 2 & 4 closed |
|----------------------------+-------------------------------|
| 8MB | pins 1 & 2, 3 & 4 closed |
|----------------------------+-------------------------------|
| 8MB | pins 1 & 2, 3 & 4 closed |
|----------------------------+-------------------------------|
| 8MB | pins 1 & 3, 2 & 4 closed |
|----------------------------+-------------------------------|
| 8MB | pins 1 & 3, 2 & 4 closed |
|----------------------------+-------------------------------|
| 12MB | pins 1 & 2, 3 & 4 closed |
|----------------------------+-------------------------------|
| 16MB | pins 1 & 2, 3 & 4 closed |
|----------------------------+-------------------------------|
| 16MB | pins 1 & 3, 2 & 4 closed |
|----------------------------+-------------------------------|
| 20MB | pins 1 & 2, 3 & 4 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM JUMPER CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | JP8 |
|----------------------------+-------------------------------|
| 24MB | pins 1 & 2, 3 & 4 closed |
|----------------------------+-------------------------------|
| 24MB | pins 1 & 3, 2 & 4 closed |
|----------------------------+-------------------------------|
| 32MB | pins 1 & 2, 3 & 4 closed |
|----------------------------+-------------------------------|
| 32MB | pins 1 & 2, 3 & 4 closed |
|----------------------------+-------------------------------|
| 32MB | pins 1 & 3, 2 & 4 closed |
|----------------------------+-------------------------------|
| 32MB | pins 1 & 3, 2 & 4 closed |
|----------------------------+-------------------------------|
| 36MB | pins 1 & 2, 3 & 4 closed |
|----------------------------+-------------------------------|
| 40MB | pins 1 & 3, 2 & 4 closed |
|----------------------------+-------------------------------|
| 48MB | pins 1 & 2, 3 & 4 closed |
|----------------------------+-------------------------------|
| 64MB | pins 1 & 2, 3 & 4 closed |
|----------------------------+-------------------------------|
| 64MB | pins 1 & 3, 2 & 4 closed |
|----------------------------+-------------------------------|
| 80MB | pins 1 & 2, 3 & 4 closed |
|----------------------------+-------------------------------|
| 96MB | pins 1 & 2, 3 & 4 closed |
|----------------------------+-------------------------------|
| 96MB | pins 1 & 3, 2 & 4 closed |
|----------------------------+-------------------------------|
| 128MB | pins 1 & 2, 3 & 4 closed |
|----------------------------+-------------------------------|
| 128MB | pins 1 & 3, 2 & 4 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | TAG |
|------------+------------------+----------------------------|
| 256KB | (8) 32K x 8 | (1) 8K x 8 or (1) 32K x 8 |
|------------+------------------+----------------------------|
| 512KB | (8) 64K x 8 | (1) 16K x 8 or (1) 32K x 8 |
|------------+------------------+----------------------------|
| 1MB | (8) 128K x 8 | (1) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP1 | JP2 |
|-------------------+--------------------+-------------------|
| 256KB | Open | Open |
|-------------------+--------------------+-------------------|
| 512KB | Closed | Open |
|-------------------+--------------------+-------------------|
| 1MB | Closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP6 | JP7 |
|------------------+--------------------+--------------------|
| 75MHz | pins 2 & 3 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 90MHz | pins 1 & 2 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 100MHz | pins 2 & 3 closed | pins 1 & 2 closed |
+------------------------------------------------------------+